Quantum Field Theory of Correlated Bose–Einstein Condensates: II. Ward–Takahashi Identities and Correlation Functions [PDF]
Journal of the Physical Society of Japan, 2021 11 ...
Takafumi Kita
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Form factors and correlation functions of $$ \textrm{T}\overline{\textrm{T}} $$-deformed integrable quantum field theories [PDF]
Journal of High Energy Physics, 2023 Abstract The study of $$ \textrm{T}\overline{\textrm{T}} $$ T T ¯ -perturbed quantum field theories is an active area of research with deep connections to fundamental aspects of the scattering theory of integrable quantum
Olalla A. Castro-Alvaredo +2 more
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The Cosmological OTOC: Formulating New Cosmological Micro-Canonical Correlation Functions for Random Chaotic Fluctuations in Out-of-Equilibrium Quantum Statistical Field Theory [PDF]
Symmetry, 2020 The out-of-time-ordered correlation (OTOC) function is an important new probe in quantum field theory which is treated as a significant measure of random quantum correlations. In this paper, using for the first time the slogan “Cosmology meets Condensed Matter Physics”, we demonstrate a formalism to compute the Cosmological OTOC during the stochastic ...
Sayantan Choudhury
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An inverse problem in quantum field theory and canonical correlation functions [PDF]
Journal of the Mathematical Society of Japan, 1999 We treat a quantum harmonic oscillator in thermal equilibrium with any systems in certain classes of bosons with infinitely many degrees of freedom. We describe the following results: (i) when a canonical correlation function is given, we so reconstruct a Hamiltonian by the rotating wave approximation from it that the Hamiltonian restores it.
Masao Hirokawa
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Variational Approximations for Correlation Functions in Quantum Field Theories [PDF]
Annals of Physics, 1999 60 pages, Latex, to be published in Annals of ...
Cécile Martin
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Bose-Einstein correlation function
Physical Review C, 2003 We show that a recently proposed derivation of Bose-Einstein correlations (BEC) by means of a specific version of thermal Quantum Field Theory (QFT), supplemented by operator-field evolution of the Langevin type, allows for a deeper understanding of the possible coherent behaviour of the emitting source and a clear identification of the origin of the ...
G. A. Kozlov, O. V. Utyuzh, G. Wilk
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Calculating the infra-red limit of quantum field theory using analyticity of correlation functions [PDF]
Journal of High Energy Physics, 2000 We describe a general method for calculating the infra-red limit of physical quantities in unitary quantum field theories. Using analyticity of Green functions in a complex scale parameter, the infra-red limit is expressed as a contour integral entirely in the ultra-violet region.
Lars Kjæ rgaard, Paul Mansfield
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THE ASYMPTOTICS OF THE CORRELATION FUNCTIONS IN (1+1)d QUANTUM FIELD THEORY FROM FINITE SIZE EFFECTS IN CONFORMAL THEORIES [PDF]
International Journal of Modern Physics A, 1992 Using the finite-size effects, the scaling dimensions and correlation functions of the main operators in continuous and lattice models of 1d spinless Bose-gas with pairwise interaction of rather general form are obtained. The long-wave properties of these systems can be described by the Gaussian model with central charge c=1. The disorder operators of
А. Миронов, A. Zabrodin
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Spectral Representation of Correlation Functions in two-dimensional Quantum Field Theories [PDF]
, 1994 9 pages, ISAS/60/94 ...
Giuseppe Mussardo
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On top Chern classes of universal bundles on moduli spaces of rank two coherent sheaves on the projective plane, or How to calculate the correlation function in SYM N=2 Nf=4 quantum field theory on complex projective plane [PDF]
, 1996 renaming the article (adding algebro-geometric title)
A. L. Gorodentsev, Maxim Leyenson
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